Gempa M 4.7 dekat Samudra Atlantik Selatan (South Georgia and the Islands) — 2017-12-21
Gempa bermagnitudo 4.7 dekat Samudra Atlantik Selatan (821 km TG, South Georgia and the Islands), kedalaman 103 km. Guncangan dirasakan 0 orang. Hasil ukur seluruh badan, kota terdampak, dan rangkaian gempa susulan.
Samudra Atlantik Selatan (821 km TG, South Georgia and the Islands) — -59.9107, -27.6757
